Disclosed are a method by which a terminal reports a mobility history, and an apparatus for supporting the same. The method comprises the steps of: updating, according to a movement of the terminal, a mobility history including identification information on a beam in which the terminal has stayed and a stay time in the beam; allowing the terminal to enter an RRC connection state; and transmitting the stored identification information and the stay time to a network.
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1. A method in which a user equipment (UE) reports a mobility history in a wireless communication system, the method comprising: storing a valid reference signal (RS) identity (ID) related to a beam in a field related to a beam ID and a stay time, during which the UE stays in the beam, in a mobility history based on a change of the beam; storing, a valid RS ID related to a transmission reception point (TRP) during which the UE stays in a field related to a TRP ID and a stay time in the TRP, in the mobility history based on a change of the TRP; allowing the UE to enter an RRC connected state; and transmitting the mobility history to a network, wherein the TRP is an area formed by a data transmission point and a data reception point, and wherein the TRP includes a plurality of beam areas.
Wireless communication systems face challenges in efficiently managing user equipment (UE) mobility, particularly in beamformed environments. This invention describes a method for a UE to report its mobility history to the network, aiding in optimized resource allocation and handover. The method involves storing a mobility history within the UE. This history includes information about the UE's movement and its association with specific transmission reception points (TRPs) and beams. Specifically, when the UE changes its associated beam, a valid reference signal (RS) identity (ID) for that beam, along with the duration the UE stayed within that beam (stay time), is recorded in a field related to the beam ID. Similarly, when the UE changes its associated TRP, a valid RS ID for the TRP and the duration of the UE's stay within that TRP are recorded in a field related to the TRP ID. A TRP is defined as an area encompassing both data transmission and reception points and can comprise multiple beam areas. After these mobility events are recorded, the UE is allowed to enter an RRC connected state. Subsequently, the UE transmits this compiled mobility history to the network. This reported history provides the network with valuable insights into the UE's recent movement patterns and its interactions with different beams and TRPs, enabling more informed decisions for network management.
2. The method of claim 1 , wherein the mobility history comprises identification information about a cell in which the UE stays and a stay time in the cell.
A system and method for tracking and analyzing user equipment (UE) mobility in a wireless network. The technology addresses the need for accurate and detailed mobility data to optimize network performance, resource allocation, and service delivery. The invention captures and processes mobility history data for a UE, including identification information about each cell the UE connects to and the duration of time the UE remains in each cell. This data is used to generate insights into user movement patterns, network coverage quality, and potential areas for network improvement. The mobility history may be stored and analyzed to predict future movement, detect anomalies, or adjust network parameters dynamically. The system enhances network efficiency by enabling proactive management of resources based on real-time and historical mobility trends. The invention is particularly useful in dense urban environments or high-traffic areas where precise mobility tracking is critical for maintaining service quality. By leveraging detailed cell-level data, the system provides a granular view of UE behavior, allowing for more informed decision-making in network operations and planning.
3. The method of claim 2 , wherein the identification information about the cell is a global ID of the cell.
This invention relates to wireless communication systems, specifically methods for identifying and managing cells in a network. The problem addressed is the need for efficient and accurate cell identification to support seamless connectivity and mobility management in wireless networks. The invention provides a method where identification information about a cell is used to facilitate communication and network operations. Specifically, the identification information is a global identifier (ID) assigned to the cell, ensuring unique and unambiguous recognition across the network. This global ID allows devices and network components to reliably identify and interact with the cell, improving handover processes, load balancing, and overall network performance. The method leverages the global ID to enable precise tracking and management of cells, enhancing the efficiency and reliability of wireless communication systems. By using a standardized global identifier, the invention ensures interoperability and consistency in cell identification, reducing errors and improving network coordination. This approach is particularly useful in dense or heterogeneous networks where multiple cells may operate in close proximity, requiring robust identification mechanisms to avoid conflicts and ensure smooth operation. The global ID can be used in various network protocols and signaling procedures to support advanced features such as mobility management, resource allocation, and service provisioning.
4. The method of claim 1 , further comprising: recording a cell ID of a cell in which the UE stays and a stay time in the cell in the mobility history based on invalidity of the beam.
This invention relates to wireless communication systems, specifically methods for managing mobility history data in user equipment (UE) when beam-based communication fails. The problem addressed is the need to accurately track UE movement when beam connections become unreliable, ensuring proper handover and network performance. The method involves recording mobility history data for a UE, including tracking the cell ID of the current cell and the duration the UE remains in that cell. When a beam used for communication becomes invalid or unreliable, the system records the cell ID and the stay time in the mobility history. This ensures that even if beam-based tracking fails, the network retains critical location and timing data for the UE. The recorded data can then be used for handover decisions, mobility management, and network optimization. The method may also include determining the invalidity of the beam based on signal quality metrics, such as signal strength or error rates, and may involve switching to alternative beams or cells if available. The mobility history data is stored locally on the UE or transmitted to the network for further processing. This approach improves reliability in scenarios where beam-based tracking is disrupted, ensuring seamless connectivity and efficient resource allocation.
5. A user equipment (UE) for reporting a mobility history in a wireless communication system, the UE comprising: a memory; a transceiver; and a processor operatively connected to the memory and the transceiver, wherein the processor is configured to: store a valid reference signal (RS) identity (ID) related to a beam in a field related to a beam ID and a stay time, during which the UE stays in the beam, in a mobility history based on a change of the beam; store, a valid RS ID related to a transmission reception point (TRP) during which the UE stays in a field related to a TRP ID and a stay time in the TRP, in the mobility history based on a change of the TRP; allow the UE to enter an RRC connected state; and transmit the mobility history to a network, wherein the TRP is an area formed by a data transmission point and a data reception point, and wherein the TRP includes a plurality of beam areas.
A wireless communication system involves user equipment (UE) devices that move between different transmission reception points (TRPs) and beams within those TRPs. Tracking mobility history is essential for network optimization, but existing methods may lack detailed or structured reporting of beam and TRP transitions. This invention addresses the need for a UE to accurately log and report its mobility history, including beam and TRP changes, to improve network performance. The UE includes a memory, transceiver, and processor. The processor stores a valid reference signal (RS) identity (ID) associated with a beam in a mobility history, along with the beam ID and the duration the UE remains in that beam. Similarly, it records a valid RS ID related to a TRP, along with the TRP ID and the stay duration in that TRP, whenever the UE transitions between TRPs. The mobility history is compiled as the UE moves between beams and TRPs. Once the UE enters an RRC connected state, it transmits the mobility history to the network. A TRP is defined as an area formed by data transmission and reception points, encompassing multiple beam areas. This structured reporting enables the network to analyze mobility patterns and optimize resource allocation.
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February 22, 2018
February 22, 2022
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